{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6df440ca2901","name":"PISTON KIT 2025-26 KX250 78.00 B, PROX 01.4355.B","sku":"56-W8839.B.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":180.72,"formatted":"£180.72"},"summary":"PISTON KIT 2025-26 KX250 78.00 B, PROX 01.4355.B. This piston kit offers standard compression performance with precise engineering for reliable operation. Manufactured to meet OEM specifications, it ensures compatibility and consistent power delivery in high-performance conditions. Piston diameter: 77.97mm. Compression: Standard (14.0:1). Size: B. Cross-Reference OEM Part Numbers: PROX 01.4355.B. Manufacturer: Pro-X Racing. Weight: 105g.","attributes":[{"label":"Variant Id","value":"346598"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W8839_2EB_2EPX/4a6a094c727543f6.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W8839_2EB_2EPX/4a6a094c727543f6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W8839_2EB_2EPX/ee8a80e31461e003.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W8839_2EB_2EPX/d5683d48fe30c58c.jpg"],"description":"PISTON KIT 2025-26 KX250 78.00 B, PROX 01.4355.B. This piston kit offers standard compression performance with precise engineering for reliable operation. Manufactured to meet OEM specifications, it ensures compatibility and consistent power delivery in high-performance conditions. Piston diameter: 77.97mm. Compression: Standard (14.0:1). Size: B. Cross-Reference OEM Part Numbers: PROX 01.4355.B. Manufacturer: Pro-X Racing. Weight: 105g.","descriptionMarkdown":"### ProX Piston Kit - Standard Compression - 78.00mm Bore Size B\n\nThis ProX Piston Kit is meticulously engineered to provide reliable performance for your motorcycle. Designed for standard compression ratios, this kit ensures consistent power output and durability for demanding riding conditions. Each component is manufactured to precise specifications, meeting or exceeding OEM quality to guarantee a perfect fit and optimal function.\n\n**Key Features:**\n\n \n- Precision Engineered: Manufactured to exacting standards for a perfect fit and reliable operation.\n \n- Standard Compression: Delivers performance consistent with original equipment specifications, ensuring a balanced power curve.\n \n- High-Quality Materials: Built to withstand the rigors of high-performance use.\n \n- Direct Replacement: Designed to replace the original piston, simplifying installation.\n\n**Specifications:**\n\n \n- Piston Diameter: 77.97mm\n \n- Compression Ratio: Standard (14.0:1)\n \n- Bore Size: B\n\n**ProX Part Number:** 01.4355.B","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 250","cc":null,"notes":null,"years":"2025–2026"}],"collections":[],"links":{"page":"https://www.2brosparts.com/products/piston-kit-2025-26-kx250-7800-b-prox-014355b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6df440ca2901:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6df440ca2901:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}